Useful third-party tools

The utils/ dir should contain third-party tools from Adobe to help
with the development process. In here, you should have:

A debugger build of avmshell

When debugging an AVM2 problem in Shumway, it's useful to have the real
AVM2 around. Surprisingly, the official AVM2 used in Adobe is actually
open-source: it was donated to Mozilla as tamarin.
The actual project has issues building with recent versions of gcc, so
I prefer to grab a build from Adobe themselves. They can be found in the
Mozilla FTP.

A version of the ActionScript compiler, ASC

Open-sourced as part of the Flex SDK, recently donated to Apache, it can
be found in Mozilla's FTP as well.